According to the Indian naval hydrographic charts, the mainland coastline consists of the following: 43% sandy beaches; 11% rocky shores, including cliffs; and 46% mudflats or marshy shores.
Naval and trade charts drawn on his own travels were used in its making, but the descriptions of China, Japan and Java derived primarily from the travels of Marco Polo.
That is because the number of attacks, off Somalia and elsewhere, has kept growing despite the strengthening of naval patrols (see chart).
Related disciplines: Astronomy (navigation, star charts); History (naval warfare); Oceanography (history of exploration, topography of the ocean floor).
The Tarawa calamity was already a Pacific legend: how naval intelligence, relying on obsolete charts, had miscalculated the tides so flagrantly that the Marine troops in their landing vessels were forced to disembark on coral reefs and then wade ashore for hundreds of yards, exposed to killing fire from Japanese machine guns.
Chatterton, 49, a commercial scuba diver who became interested in U-boat history after finding the remains of a German submarine while diving off Atlantic City, had studied German naval archives and checked nautical charts to try to pinpoint the locations of the ships.
In 1942, she joined the Wrens and worked as a chart-corrector for naval operations, including the D-Day landings.
Wilkes entered the navy as a midshipman in 1818, became a lieutenant in 1826, and in 1830 was placed in charge of the depot of instruments and charts from which the Naval Observatory and Hydrographic Office developed.
One of those 110 is the Guardian journalist John Vidal, a distant relation of the British naval officer Emeric Vidal who first charted the rock in 1831.
